Marking-machine.



V. HOFFMAN.

MARKING MACHINE.

APPLIOATION FILED JAN. 21, 1913.

1,082,025, Patented Dec. 23, 1913.

4 sums-sum 1.

COLUMBIA PLANOORAPH CO" WASNINQTON. D. C.

V. HOFFMAN.

MARKING MACHINE.

APPLICATION FILED JAN.21,1913.

1,082,025, Patented Dec. 23, 1913.

4 SHEETS-SHEET Z.

COLUMBIA PLANuumuu L0.,WASH!NOTON, u c.

V. HOFFMAN.

MARKING MACHINE.

APPLIOATION FILED JAN. 21, 1913.

1 ,O82,025 Patented Dec. 23, 1913.

4 SHEETS-SHEET 3.

COLUMBIA I'LANDORAI'II CO.,WASIHN11TON, u. c.

V. HOFFMAN.

MARKING MACHINE.

APPLICATION FILED JAN. 21, 1913.

1 ,O82,025, Patented Dec. 23, 1913.

4 BKEETB-SHEET 4.

COLUMBIA PLANOGRAX'H cu, WASHINGTON. n. c.

Cir

VALENTINE HOFFMAN, OF CHICAGO, ILLINOIS.

MARKING-MACHINE.

Specification of Letters Patent.

Patented Dec. 23, 1913.

Application filed January 21, 1913. Serial No. 743,269.

To all whom it may concern Be it known that I, VALENTINE HOFFMAN, a citizen of the United States, residing at Chicago, in the county of Cook and State ojt' Illinois, have invented new and useful Improvements in li Iarking -Machines, of which the following is a full, clear, concise and exact description, reference being had to the accompanying drawing, torn'iing a partof this specification.

My invention pertains to marking machines, and especially relates to machines for marking leather parts in the manufacture of boots and shoes. Such a machine is useful in marking certain parts of the shoe before such parts are sewed together; so as to de ermine properly the amount of lap between the parts. For instance, in connecting a vamp to a toe piece, it is desirable that the lap between these parts be accurately determined; and, to this end, it is necessary that a line be marked on one of these parts to indicate where the edge of the other part is to be placed during the sewing operation, so that the operator may maintain the proper lap between the parts during the sowing operation. The line to be marked will vary, of course, considerably; for instance, in marking a vamp, it will vary with the length and curvature of the edge to be sewed.

It is the principal object of my invention to produce a machine in which such marking operations as that described above, and others, may be performed with ease, convenience and great rapidity, and in which the characteristics of the line to be marked may be changed easily and quickly, to suit the requirements of each particular case.

A machine particularly adapted for the marking of Vamps, together with a modifi' cation thereof adapted for the marking of quarters, is described in the following specification and shown in the accompanying drawings. It is to be understood, however, that the machine shown is only one of those in which my invention may be embodied, that changes may be made in the details of construction of the machine shown, and that my invention may be embodied in machines for performing marking operations having purposes different from those described below, without exceeding the scope of my invention, as defined in the appended claims.

In the drawings: Figure 1 is a plan of a machine especially adapted for the marking of ramps; Fig. 2 is a section on the line 2-----2 (Figs. 1 and .1-) looking in the direction oi? the arrows; Fig. 3 is a section on the line 3-3 (Figs. 1 and 4-), looking in the direction of the arrows; Fig. l is a sectional side elevation of the machine; Fig". 5 is a perspective view of a portion of one of the guide plates; Fig. (i is a detail sectional view showing the means employed for removably securing the templets in position, the section being taken on the line (i-(i of Fig. 1; and, Fig. T is a plan of a modified form of the machine particularly adapted for the marking oil quarters.

Like reference chariuzters refer to like parts throughout the t'ollmving specification and the several figures of the accompanying drawings.

Briefly stated, the machine herein described comprises a table adapted to support the vamps during the nun-king operation, which table is provided with a plurality of register stops by means of which the vamp is positioned properly on the table. These stops are movable so as to be capable of adjustment tlor dill'erent curves oi the edges of the various kinds of ramps to be marked, and are held in proper position by templets cut to various curves corresponding with the curves of the edges of the ramps to be marked. Tlii'iged to the table so as to extend over the vamp, is a Frame which carries marking pins, the positions of which are adjustable, by means of templcts, in the same manner as the registering stops are adjustable. The hinged frame is normally in raised position; but it maybe depressed suddenly, by means of a pedal or the like, so as to bring the ends of the marking pins down fi'n'cibly onto the vamp, whereby the pins mark a line across the vamp.

Referring now to the drawings, 10 designates the table mounted on suitable legs 11 and having secured to the top side thereof a thick sheet 12, of fiber board or the like, which supports the vamps during the marking operation. Hinged ,to cars 13 provided at the rear end of the table 10 is the marking-pin-supporting frame 14L. This frame is provided with a rearwardly projecting lug 15 to which is connected the top end of a retractile spring 16, the bottom end of which is connected to a lug 17 projecting rearwardly from the rear legs of the table '10. It will be seen that the spring 10 normally holds the frame 14 in a raised position. The

frame 1 l is provided with laterally extending pins 18 to which are pivotally connected the arms of a yoke 19. The yoke 19 is capable of being depressed at will, as by means of a suitable pedal device, so as to enable the frame Jr to be brought down suddenly, against the action of the spring 16, at will. The frame 1% has a broad deep slot 20 formed in the front part thereof; and in this plate there is secured a guide plate 21, this plate being of such width as to leave a space between its rear edge and the bottom of the slot 20. The guide plate 21 has a series of circular guide holes 22, extending from front to rear thereof; and slots 23, which terminate short of the rear edge of the guide plate, connect these guide holes with the top and bottom faces of the guide plate. Mounted so as to slide easily in the guide holes are a plurality of cylindrical blocks 24 having vertical pins 25 extending therethrough. The pins 25 lie in the slots 23, and are thereby held in vertical position. Their lower ends are formed with blunt chisel points 26, which leave a clear rectangular mark when the pins are brought down forcibly upon the leather. Each of the blocks 24; is connected with the frame 14: by means of a spring 27. As will readily be seen, these springs normally tend to hold the blocks in the position in which the pins 25 engage the rear ends of the slots 23.

A vamp 28 is shown as lying upon the table 10; and, in the illustrated use of the device, it is desired to mark a line across this vamp at a specified distance within the edge thereof. To do this, the pins 25 must be set to the proper position and curvature. This is effected by means of a templet 29, the front edge of which is formed to a curve corresponding to the curve of the line to be marked on the vamp. The templet 29 is placed on the frame 1 1, its position being properly determined by means of pins 30, with its front edge in engagement with the rear sides of the pins 25, which latter it pushes forward, against the action of the springs 27, thus causing the pins 25 to take up the required position and curvature. The templets may be cut from thin sheet metal, different tcmplets being used, of course, for different curvatures and positions of the lines to be marked. If desired, the templets may be made reversible, as is the case in the templet shown in the drawings.

In order that the temolet 29 may be maintained in position securely In spite of the vibration incident to the operation of the machine, I provide screws 31 having winged heads 32 adapted to pass through slots in the templet. After tl e templet has been placed over the heads 32 of the screws 31 (these heaos being in the position indicated in dotted lines in Fig. 6), the screws are turned through 90 degrees, whereby the templet is secured in position, but in such a manner that it may be readily removed when desired. Springs 84 are provided around the screws 31, which springs engage the under surface of the templet and tend to force the latter against the heads 32 of the screws 31, thus preventing accidental turning of the screws.

Beneath the hinged frame 14, the table is provided with a guide plate 21 similar to the guide plate 21. This guide plate, like the guide plate :21, is formed with guide holes 22 and slots 23 having slidably mounted therein blocks 24:, these parts being similar to the parts 22, 23 and 24C described above. The blocks 2% are provided with hooks 35 which extend forwardly over the fiber sheet 12, thus enabling the fiber sheet to be extended rearward into such a position that the marking pins 26 will always strike upon it regardless of the position of these pins. Tl e blocks 2%, with their hooks 35, are normally retracted by means of springs 27 They are held forward, in any desired position and curvature, by a templet 29 which is mounted on a raised portion 36 of the table 10 in a manner similar to that in which the templet 29 is mounted on the frame 14. The templet 29 is of such curvature and dimensions as to cause the hooks 35, which form register stops to follow the curvature of the marking pins and maintain these hooks at such a distance behind the marking pins as to give the requisite distance between the line marked by these pins and the edge of the vamp.

In the use of the machine, the proper templets 29 and 29 are chosen for positioning the marking pins 26 and the hooks 85 correctly to accord with the curvature of the edge of the vamp to be marked and the distance of the line to be marked from the edge of the vamp. When this has been done the vamps are successively placed on the table with their front edges in engagement with the hooks 35, the frame let being brought down upon each vamp so that the points of the pins 25 will mark a line across the same. The machine may be operated conveniently and with ease and considerable rapidity; and the templets may be changed very quickly when it is desired to mark vamps of a different character.

In the marking of quarters, it is desirable to change somewhat the shape and disposition of the guide plates. Fig. 7 shows a machine adapted for the marking of quarters; and in this figure 12 1 1 21 and 29 represent the fiber sheet, frame, guide plate, and templet, these parts corresponding to the parts 12, 14, 21 and 29 described above, and being constructed in the same manner. Two quarters 38 are shown in position, for the purpose of illustrating the use of the machine; but only one quarter will usually be marked at a time. The operation of the machine is, of course, the same for marking quarters as that of the machine described above for marking Vamps.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a marking machine, a support, a plate vertically movable with respect to said support, said plate having a plurality Of guide-ways formed therein, a plurality ot marking devices slidably mounted in said guide-ways, means tending to move said marking devices rearwardly in said guideways, and a templet for retaining saidmarle ing devices in a predetermined position against the action of said moving means.

2. In a marking machine, a support, having a plurality of guide-ways therein, a frame vertically movable with respect to said support, a plurality of adjustable marking devices carried by said frame, stops slidably mounted in said guide-ways, means normally tending to move said stops rearwardly in said guideways, and a templct for retaining said stops in a predetermined position against the action of said moving means.

3.111 a marking device, a support, a plate vertically movable with respect to said support, a guide-plate carried by said plate, said guide-plate having a plurality ol guide-ways formed therein, a plurality of marking devices slidably mounted in said guide-ways, springs normally tending to move said marking devices rcarwardly in said guide-ways, and a templet adapted to engage said marking devices and hold them in a predetermined position against the action of said springs.

l. in a marking device, a support, a plate vertically movable with respect to said support, a guideplate carried by said plate, said guide-plate having a plurality of guideways formed therein, a plurality of mark ing devices slidably mounted in said guideways, springs normally tending to move said marking devices rearwardly in said guideways, a templet adapted to engage said marking devices and hold them in a predetermined position against the action of said springs, and adjustable stops carried by said support for properly positioning the work with respect to said marking devices.

5. In a marking device, a support, a frame vertically movable with respect to said support, a guide-plate carried by said :trame, said plate having holes formed therethrough from the front to the rear edge thereof, and having slots between said holes and the lower surface thereof, a pinrality of marking devices mounted in the holes of said guide-plate and having marking nien'ibers extending downwardly through said slots, springs normally tending to move said marking devices rezuwvardly in said holes, and a teniplet for engaging said marking devices and retaining them in a predetermined position against the action of said springs.

(5. In a marking device, a support, a frame vertically movable with respect to said support, a guide-plate carried by said i'rame,said plate having holes formed therethrough from the front to the rear edge thereof, and having slots between said holes and the upper and lower surfaces thereof, a plurality of marking devices mounted in the holes of said guide-plate and having marking members extending downwardly through said slots and having abutments extending upwardly through said slots, springs normally tending to move said marking devices rearwardly in said holes, and a templet for engaging said abutmcnts and retaining said marking devices in a predetermined position against the action of said springs.

in witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

VALENTINE HOFFhL XN. Witnesses E. R. KING, CHARLES Gr. Corn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

